Log impregnating device



June 14, 1949. V SSON 2,473,480

LOG IMPREGNATING DEVICE Filed March 9, 1945 xzuljm E55 Patented June 14,1949 LOG IMPREGNATING DEVICE Henry Svensson, New York, N. Y.; Agnes B.

Svensson, administratrix of said Henry Svensson, deceased, assignor bymesne assignments, to Agnes B. Svensson, New York, N. Y.

Application March 9, 1943, Serial No. 478,529

1 Claim. 1

This invention relates to improvements in tree impregnating devices foruse in impregnatin freshly cut trees, logs or timber, by forcin out thesap and replacing it with the impregnant.

The principal object of the invention is the formation of a cap-head tomatch a given tree by sawing off a short length from one end of thetree, hollowing said length out to form a treating chamber therein,covering the hollowed out surfaces with means impervious to the imprenant, mounting fittings on said length for the compressed air, conduitsfor leading the impregnant into the chamber, and for purging airtherefrom, said cap head being adapted to be thereafter secured to thelog in substantially its original relation thereto.

Another object of the invention is the provision of a cap head formed bysawing ofi a length of the end of the tree to be treated, hollowing outthe end of the tree from which said length is sawed to form a treatingchamber therein, making the sawed end of said length impervious to theimpregnant, forming valved passages in said length for connection to airand/or to the impregnant, and securing said length substantially in itsoriginal relation to the log and proceeding to force out the sap and toapply the impregnant.

A further object of the invention is to provide means for impregnatingtrees with material suitable for coloring, moisture-proofing,preserving, or otherwise treating the cellular structure of the wood.

Other objects and advantages of the invention will be apparent to thoseskilled in the art upon a study of the following specification and theaccompanying drawings.

n the drawings:

Figure 1 is a cross-sectional view of a cap head secured to the broadend of a tree or log.

Figure 2 shows a system for the simultaneous treatment of two tree endportions.

As shown on the drawings:

Figure 1 shows a cut tree having a cap head 90 containing a curvedsurface 9| which is preferably impervious to the treating reagent,forming a treating chamber I 0a between the tree and the cap head 90.The cap head has a central aperture provided with a valved controlconduit 9' for the admission of a fluid treating medium under pressureinto treating chamber Illa. Threaded conduit 9', containin valve ll andpressure gauge I 2, passe through a supporting plate l3 and is heldtherein by means of locking nut M. The plate I3 is spaced from the 2 caphead by means of a bushing I5. The juncture of the tree end and the caphead 90 is secured by means of an annular clamping collar l6 actingagainst gasket H, which is preferably made of a resilient material, suchas cork. The collar l6 has threaded swivel bolts [8 pivotally attachedthereto, the bolts [8 being secured against the plate l3 by means ofwing nuts l9.

Figure 2 shows a tree portion T secured in holders AB. The cap heads 90'are secured against the tree surfaces by means of screw members 94containing nuts 94. The treating chambers (TC) 9| formed by the cap headare fed from a high pressure fluid source through valved conduits asshown.

It will be apparent to those skilled in the art that many modificationsof the invention herein shown and described may be made withoutdeparting from the principle of the invention, and it is not myintention to limit the invention other than as necessitated by the scopeof the following claim.

I claim:

In an impregnating system for trees, logs and the like, in combination,a cap head comprising a length sawed off from the end of the tree to beimpregnated and provided with a curved chamber extending into saidlength from the sawed end and with a through passage into said chamber,a valve controlled conduit connected to said passage and to sources offluid media under pressure for admission of said media to said chamber,and clamping means for securing said length in fluid tight relation tothe end of said tree in substantially its original positionalrelationship and for supporting said valve controlled conduit in itsconnected relation to said passage.

HENRY SVENSSON.

REFERENCES CITED The following referenlces are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 109,027 Lear Nov. 8, 1870 748,033Angus Dec. 29, 1903 1,142,610 Norman June 8, 1915 FOREIGN PATENTS NumberCountry Date 109,990 Austria June 25, 1928

